Genetic analysis of a novel dominant rice dwarf mutant 986083D

doi:10.1007/s10681-007-9548-6

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	Genetic analysis of a novel dominant rice dwarf mutant 986083D
	Qin, Ruizhen 1; Qiu, Yang 1; Cheng, Zhijun 1; Shan, Xueyan 2; Guo, Xiuping 1; Zhai, Huqu 1; Wan, Jianmin 1
刊名	EUPHYTICA
	2008
卷号	160 期号:3 页码:379-387
关键词	rice (Oryza sativa) dominant dwarf mutant genetic analysis gibberellic acid sensitivity
ISSN号	0014-2336
DOI	10.1007/s10681-007-9548-6
通讯作者	Qin, Ruizhen
英文摘要	This study was to determine the agronomic and genetic characteristics of a novel rice dominant dwarf mutant 986083D (japonica) and its potential in breeding. 986083D derived from the anther culture of an autotetraploid indica/japonica hybrid and its progeny segregated into normal and dwarf plants. Homozygous and heterozygous 986083D plants looked similar phenotypically, showing shortened stature, erect leaves, more tillers and poor fertility. The segregation ratio of dwarf to normal plants fit the expected 3:1 by chi(2)-test in 77 out of 88 tested lines. Crosses between homozygous 986083D and eight other rice varieties had uniform semi-dwarf F-1 plants. The F-1 plants from crosses between heterozygous 986083D and five other varieties had normal and semi-dwarf plants close to the expected ratio of 1:1. The reduction of plant height in F-1 plants ranged from 40.0 to 53.5% in a subtropical environment and from 37.5 to 48.2% in a temperate environment. 986083D showed moderate sensitivity to exogenously applied GA(3) in terms of elongation of shoots and induction of alpha-amylase activity in the endosperm. Linkage analysis showed that the dominant dwarf gene (designated as Dx) in 986083D was not allelic to D53. Dx was roughly mapped to the short arm of chromosome 8. All results showed that 986083D was a novel mutant controlled by single dominant gene, providing a valuable material in rice breeding.
学科主题	Agronomy ; Plant Sciences ; Horticulture ; AGRONOMY ; HORTICULTURE ; PLANT SCIENCES
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000254088300009
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5616]
专题	作物科学研究所_其他01
作者单位	1.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China 2.Mississippi State Univ, Dept Plant & Soil Sci, Mississippi State, MS 39762 USA
推荐引用方式 GB/T 7714	Qin, Ruizhen,Qiu, Yang,Cheng, Zhijun,et al. Genetic analysis of a novel dominant rice dwarf mutant 986083D[J]. EUPHYTICA,2008,160(3):379-387.
APA	Qin, Ruizhen.,Qiu, Yang.,Cheng, Zhijun.,Shan, Xueyan.,Guo, Xiuping.,...&Wan, Jianmin.(2008).Genetic analysis of a novel dominant rice dwarf mutant 986083D.EUPHYTICA,160(3),379-387.
MLA	Qin, Ruizhen,et al."Genetic analysis of a novel dominant rice dwarf mutant 986083D".EUPHYTICA 160.3(2008):379-387.